Php 如何将多维数组从android传递到soap web服务参数

多维数组有问题，我有soap中的web服务，需要将此数组作为参数传递，如下所示：

HashMap<String, String> phone = new HashMap<String, String>();

    phone.put("internalId", "phone");
    phone.put("fieldId", "8");
    phone.put("displayName", "Phone");
    phone.put("value", "XXXXXXXXXXXX");
    custom_field.add(phone);
    /*Log.d("hash Phone", String.valueOf(phone));
    Log.d("hash Phone custom Field ", String.valueOf(custom_field));*/

HashMap<String, String> address = new HashMap<String, String>();

    address.put("internalId", "address");
    address.put("fieldId", "3");
    address.put("displayName", "Address");
    address.put("value", " XXXX XXXXX, XXXX");
    custom_field.add(address);
    /*Log.d("hash Address", String.valueOf(phone));
    Log.d("hash Address custom Field ", String.valueOf(custom_field));*/
HashMap<String, String> nationalid = new HashMap<String, String>();

    nationalid.put("internalId", "nationalid");
    nationalid.put("fieldId", "13");
    nationalid.put("displayName", "National-ID");
    nationalid.put("value", "XXXXXXX");
        custom_field.add(nationalid);

HashMap<String, String> maritalstatus = new HashMap<String, String>();

    maritalstatus.put("internalId", "maritalstatus");
    maritalstatus.put("fieldId", "16");
    maritalstatus.put("displayName", "Marital status");
    maritalstatus.put("value", "Single");

    custom_field.add(maritalstatus);

将soapfault错误作为一个错误

java.lang.RuntimeException: Cannot serialize:

有什么帮助吗？我怎样才能通过android完成这项工作

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我尝试过hashmap嵌套和arraylist嵌套，但都不适用于我。

创建一个循环并将数组的每个元素添加到请求对象中。另一种方法是编组，试试这个链接@niravshah_php现在我有了另一种方法来完成这个任务，所以我很接近这个问题，谢谢你的努力。

java.lang.RuntimeException: Cannot serialize: